Serenity Springs Mystery Books in Order

The Serenity Springs Mystery series takes place in a picturesque town that lives up to its name only on the surface. At the heart of it all is Bridget "Birdie" Hartley, a private investigator who has turned her love of mysteries into a full-time job.

In The Girl in the Springs, Birdie is known as the local go-to detective for everything from small-town drama to the occasional real crime. When panicked parents call about missing teens, what looks like a case of runaway young love quickly feels off. Following the trail, Birdie stumbles into a pattern of vanished couples and bizarre events that suggest something far larger and more dangerous.

Throughout the series, Serenity Springs becomes less of a cozy backdrop and more of a pressure cooker. Strange packages, organized robberies, disappearances, and ritualistic elements hint at a shadowy network operating beneath the town’s idyllic image. Birdie’s own life starts to unravel as the cases connect to her family history and the long, painful search for her missing sister.

The books balance investigation with Birdie’s relationships—with her partner Noah, with friends and clients, and with the women who become targets alongside her. There’s a strong thread of female friendship and solidarity running through the series, even as trust grows harder to hand out.

Tone-wise, these stories sit somewhere between small-town mystery and full-on thriller. There are cozy touches—shops, local festivals, familiar faces—but danger feels close and personal. Holidays and community events often become the backdrop for chaos, giving the books a creeping sense that nowhere in Serenity Springs is truly safe.

Co-written with K.S. Gray, the series leans into ongoing arcs as much as case-of-the-book plots. Clues introduced early on echo across multiple titles, and Birdie’s pursuit of the people pulling strings in the shadows gives readers a long game to follow.

If you enjoy mysteries where a seemingly charming town hides a spine of real menace, and where a stubborn PI keeps going long after most people would have quit, start with The Girl in the Springs and let the rest unfold in order.